患者，男，30岁，头部外伤后处于熟睡状态，不易唤醒，虽在强烈刺激下可被唤醒，但醒时答话含糊或答非所问，且很快又再入睡。患者意识障碍程度为（）。

A.嗜睡

B.意识模糊

C.昏睡

D.轻度昏迷

E.中度昏迷

Days later, my brother called to say he was all right, but________say where he was.[ ]

A. mustn' t  

B. shouldn't

C. wouldn't  

D. mightn't